| Zip Code : | 21771 |
| City : | Mount Airy town |
| County : | Frederick County, Howard County, Montgomery County, Carroll County |
| State : | Maryland (MD) |
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| Land Area : | 85.06 sq mi |
| Water Area : | 0.17 sq mi |
| Latitude : | 39.3946522 |
| Longitude : | -77.1639843 |
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| Population (2010): | 29,563 |
| Population Estimate (2012) : | 29,101 |
| Population Density : | 347.54/sq mi |
| Housing Units (2012) : | 10,200 |
| Median Household Income (2012) : | $104,942 (Maryland : $72,999, USA : $53,046) |
| Median Family Income (2012) : | $121,112 (Maryland : $88,092, USA : $64,585) |
| Median House Price (2012) : | $407,000 (Maryland : $304,900, USA : $181,400) |